MDMA/MDA is the most pleasurable drug out imo, it doesn't get any better the first few times you get the good shit. Full body/mind orgasm for several hours is a good description. But that's the problem, most of the stuff out there is fake / cut / something else entirely. Because of these, if you are planning on doing it, buy a reagent test kit. You can get a mecke reagent for around $20. It won't tell you the purity, if there is anything else in it, but if you get a positive test you can be fairly sure that it's at least worth a second look. Also, the deadly pills will normally quickly be scoped out online very fast on sites like Pill Reports, Bluelight, so on and so forth. If you buy pills instead of molly make sure to look them up and try to find recent comments from the region you live in. Some pills are known to be shit, for instance pretty much any cut out pill is garbage and you should laugh at anyone selling them and maybe kick them in the balls (ex: Bart Simpsons, Transformers, Garfields)

Like any other drug you have to be careful. Don't overdo it with an unknown product, start low and up the dose the next time. Most of the people who get really hurt, even with tainted pills, are putting themselves in dangerous situations by not testing their product (honestly a test kit costs as much as one dose it's a no brainer), by taking stupid doses, or by overheating and not staying hydrated. Also, MDxx type drugs should not be used more than once a month or so, preferably a few times a year at most. Used in moderation MDxx drugs have a fairly good safety profile. Used irresponsibly, well that's another story entirely.